<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="dog">

    </div>
    <script>
        const dog = {
            name: '小白',
            age: 10
        }
        let pro = new Proxy(dog, {
                get: function() {
                    console.log(this)
                    return this
                },
                //传入对象、属性、要修改的值
                set: function(tag, prop, val) {
                    tag[prop] = val
                }
            })
            //调用
        pro.age = 5
        pro.name = '嘿嘿'
        console.log(dog);
    </script>
</body>

</html>